自学.net（5）SqlBulkCopy批量数据插入

插个1万条的数据用了40多秒，我感觉我这个代码还是有问题

using Microsoft.Win32;

using System;

using System.Collections;

using System.Collections.Generic;

using System.Configuration;

using System.Data;

using System.Data.SqlClient;

using System.IO;

using System.Linq;

using System.Text;

using System.Threading.Tasks;

using System.Windows;

using System.Windows.Controls;

using System.Windows.Data;

using System.Windows.Documents;

using System.Windows.Input;

using System.Windows.Media;

using System.Windows.Media.Imaging;

using System.Windows.Navigation;

using System.Windows.Shapes;



namespace 导入数据优化

{

    /// <summary>

    /// MainWindow.xaml 的交互逻辑

    /// </summary>

    public partial class MainWindow : Window

    {

        public MainWindow()

        {

            InitializeComponent();

        }



        private void btnImport_Click(object sender, RoutedEventArgs e)

        {

            string connStr = ConfigurationManager.ConnectionStrings["dbConnStr"].ConnectionString;



            OpenFileDialog ofg = new OpenFileDialog();

            ofg.Filter = "文本|*.txt";

            if (ofg.ShowDialog() == false)

            {

                return;

            }

            IEnumerable<string> lines = File.ReadLines(ofg.FileName, Encoding.Default);

            DateTime startTime=DateTime.Now;



            DataTable table = new DataTable();

            table.Columns.Add("haoduan");

            table.Columns.Add("diqu");

            table.Columns.Add("leixing");

            table.Columns.Add("quhao");

            for (int i = 1; i < lines.Count(); i++)

            {

                 string line = lines.ElementAt(i);

                 string[] str = line.Split('\t');

                 string haoduan = str[0];

                 string diqu = str[1];

                 diqu.Trim('"');

                 string leixing = str[2];

                 leixing.Trim('"');

                 string quhao = str[3];

                 quhao.Trim('"');



                  DataRow row=table.NewRow();

                  row["Haoduan"] = haoduan;

                  row["Diqu"] = diqu;

                  row["Leixing"] = leixing;

                  row["Quhao"] = quhao;

                  table.Rows.Add(row);



            }



            using (SqlBulkCopy bulkCopy = new SqlBulkCopy(connStr))

            {

                bulkCopy.DestinationTableName = "T_Tel";

                bulkCopy.ColumnMappings.Add("haoduan", "haoduan");

                bulkCopy.ColumnMappings.Add("diqu", "diqu");

                bulkCopy.ColumnMappings.Add("leixing", "leixing");

                bulkCopy.ColumnMappings.Add("quhao", "quhao");

                bulkCopy.WriteToServer(table);

            }

            TimeSpan ts = DateTime.Now - startTime;

            MessageBox.Show(ts.ToString());



//            using (SqlConnection conn = new SqlConnection(connStr))

//           { 

//                conn.Open();

               

//                for (int i = 1; i < lines.Count(); i++)

//                {

//                    string line = lines.ElementAt(i);

//                    string[] str = line.Split('\t');

//                    string haoduan = str[0];

//                    string diqu = str[1];

//                    diqu.Trim('"');

//                    string leixing = str[2];

//                    leixing.Trim('"');

//                    string quhao = str[3];

//                    quhao.Trim('"');

//                    using (SqlCommand cmd = conn.CreateCommand())

//                    {

//                        cmd.CommandText = @"insert into T_Tel(haoduan,diqu,leixing,quhao)

//                        values (@Haoduan,@Diqu,@Leixing,@Quhao)";

//                        cmd.Parameters.Add(new SqlParameter("@Haoduan", haoduan));

//                        cmd.Parameters.Add(new SqlParameter("@Diqu", diqu));

//                        cmd.Parameters.Add(new SqlParameter("@Leixing", leixing));

//                        cmd.Parameters.Add(new SqlParameter("@Quhao", quhao));

//                        cmd.ExecuteNonQuery();

//                    }

//                }   

//            }

           

        }

    }

}